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is a vertically oriented shoot 'em up arcade game produced by Atari, Inc. in 1981. The game was designed by Ed Logg along with Dona Bailey, one of the few female game programmers in the industry at this time. It was also one of the first arcade coin-operated games to have a significant female player base, after Pac-Man. The player defends against centipedes, spiders, scorpions and fleas, completing a round after eliminating the centipede that winds down the playing field.